[Pussiwillow]

Originally Posted by Tobz_au

Did you end up picking new rod bearings?

I'm ordering my parts now (mmr baffle, genuine Rod bolts, oil pan gasket and bolts and hard race sway bar)

I'm thinking of getting the king rod bearings in std size

Also interested to know if you are going to completely remove the subframe or just drop it slightly?

I got king bearings however I'm rethinking this and wanted to open the pan this weekend and see what oem bearing codes were because I'm thinking about going oem even tho they're so expensive, they're going to be fool proof reliable

[Pussiwillow]

So when engine builders build, they shoot for a slightly larger clearance, this is where aftermarket bearings come into play, kings from what I see achieves around a .002 clearance, oem is around .0015
The larger clearance can handle thicker oils and abuse, they don't last as long because built motors will need a refresh, oem bearings have proven to be just fine in these cars at 80-120k plus miles and still going, mine isn't going for any large unrealistic numbers or sustained abuse, so oem may be the best option and running quality 5w30 oil

Huge debate in another group but they have found 30w is better than 40w at oiling at higher rpm and drains back to the pan marginally faster, no downsides to it but that's all subjective and a rabbit hole ha

[thejeremyman9]

Originally Posted by Pussiwillow

So when engine builders build, they shoot for a slightly larger clearance, this is where aftermarket bearings come into play, kings from what I see achieves around a .002 clearance, oem is around .0015
The larger clearance can handle thicker oils and abuse, they don't last as long because built motors will need a refresh, oem bearings have proven to be just fine in these cars at 80-120k plus miles and still going, mine isn't going for any large unrealistic numbers or sustained abuse, so oem may be the best option and running quality 5w30 oil

Huge debate in another group but they have found 30w is better than 40w at oiling at higher rpm and drains back to the pan marginally faster, no downsides to it but that's all subjective and a rabbit hole ha

Have found on what basis?

[Pussiwillow]

Let me see if I can find the thread, basically a fairly long thread in an n54 group I think it was, TLDR: was in bmw application, bmw brand oil was the "best" 30w having better flow especially at high rpm

Marginally faster drainage and cooling with 30w was determined among the forum scientists lol

I think the most popular oils were "tested"
I'll have to find it, it's been a minute
I was searching for clearances and oil weights in these engines and n54 has more info, and they run the same bearings and journals and that's how I found it
Give me an hour or so and I'll try to find

Still looking, can't remember what I searched exactly to find it, it was interesting to say the least

[Pussiwillow]

Originally Posted by thejeremyman9

Have found on what basis?

https://www.e90post.com/forums/showt...898&page=3

Starts mainly page 3
At work didn't brief through it much but I think this was the thread

[thejeremyman9]

Originally Posted by Pussiwillow

https://www.e90post.com/forums/showt...1513898&page=3

Starts mainly page 3
At work didn't brief through it much but I think this was the thread

Just skimmed it, seems like a bunch of people throwing theories out lol. I am on my first year of running liqui moly 40w kit from FCP and i will be changing my oil in April and sending in to blackstone. My previous analysis was done on whatever the dealer had put in, so probably 30w, so i will have at least one data point to compare.

[Pussiwillow]

Originally Posted by thejeremyman9

Just skimmed it, seems like a bunch of people throwing theories out lol. I am on my first year of running liqui moly 40w kit from FCP and i will be changing my oil in April and sending in to blackstone. My previous analysis was done on whatever the dealer had put in, so probably 30w, so i will have at least one data point to compare.

Ya oil threads are interesting to say the least, I look forward to seeing what you come up with

[Tobz_au]

Yep I’ve gone king for the clearance as well. I’m not likely to put huge miles on mine as it’s a track car, so king bearings were a no brainer for me.

[Pussiwillow]

Originally Posted by Tobz_au

Yep I’ve gone king for the clearance as well. I’m not likely to put huge miles on mine as it’s a track car, so king bearings were a no brainer for me.

Any reason king over acl?

[terryd5150]

So did anyone change out bearings and rod bolts?

If so, what did you use?

ARP bolts and BMW bearings?

[F32Fleet]

Originally Posted by Tobz_au

My wife has been working from home this week. And unfortunately my oil cooler, intake, downpipe, race intercooler and some other bits and bobs all arrived in one day..... She was very suspicious of all the parcels and wondering how regular the deliveries are!!!

Mine would be...well...furious. lol

[Tobz_au]

Originally Posted by Pussiwillow

Any reason king over acl?

Availability

[Pussiwillow]

Originally Posted by terryd5150

So did anyone change out bearings and rod bolts?

If so, what did you use?

ARP bolts and BMW bearings?

Arp bolts can distort the big end
It's recommended to measure and machine the big end if necessary when doing arp, the few people who have said "it's fine"
It's not worth a 5k stump.

[Pussiwillow]

Ladies and gentlemen the mmr baffle arrived super fast
Just got it today
Ordered on Monday the 7th, got Saturday the 12th if anyone ends up searching this later it'll be nice to see ship times, very well packaged and really nicely engineered.
Note: one thing I didn't realize was the "windows" have nitrile rubber flaps, they seem very nice and well made, and are made to handle high oil temps, however time will tell. I won't know, unless a piece breaks off and ends up clogging my pickup, then you get a surprise race engine build lol.

[Tobz_au]

Based on your initial impressions, does it look like it will work well for high g corners?

[Pussiwillow]

Originally Posted by Tobz_au

Based on your initial impressions, does it look like it will work well for high g corners?

I'm certainly no engineer but seeing it in hand, i whole heartedly believe it'll assist in more stable oil pressure for longer in high G turns than without it. It's certainly not going to hurt. It's obviously a different set up and premise over a weld in baffle where oil is sealed into the sump essentially with only the pickup as a means of leaving. This will just challenge or slow oil from leaving the sump if I'm seeing this right. Which is enough in my opinion to prevent most starvation situations.
I also plan to run a half quart over to be sure when I see track use hopefully later this year.

[Pussiwillow]

@Tobz_au

Is this the correct tow hook I need? Unfortunately couldn't get away from town to get one so I'll have to order one. Wanna make sure I get the correct one. Thanks

[Tobz_au]

This is the one ive ordered, looks the same. But i cant confirm it fits yet as it has not arrived. I'm just going off what i have read online

https://www.fcpeuro.com/products/bmw...ge-72157070643

[Pussiwillow]

Originally Posted by Tobz_au

This is the one ive ordered, looks the same. But i cant confirm it fits yet as it has not arrived. I'm just going off what i have read online

https://www.fcpeuro.com/products/bmw...ge-72157070643

Perfect, that's the same part number I got. At worst a little modification will be needed but it looks to be correct

[Tobz_au]

So I would love to do a sanity check. These are the parts I ordered, let me know if i missed anything

12 x Rod Bolts - BMW-11247589671
Oil pan Bolt Set - CRP-HWK0003
3 x King Rod Bearings (ship in pairs) - KEB-CR222SV
Oil pan Gasket - BMW-11137600482
Pick up tube gasket - BMW-11417527092
Redline Assembly Lube
Tow Hook - BMW-72157070643
MMR Performance Baffle - MMR20-0501
5w30 Synthenic Oil

Green plastigauge to check clearances...

I saw in another thread someone ordering oil pump bolts, not sure why?

In terms of torque for the rod bolts, as im using OEM it would be 20Nm, 70 degrees, and then 70 degrees again

While i have this apart ill also update the engine mounts and get a Hard Race sway bar

[Pussiwillow]

Originally Posted by Tobz_au

So I would love to do a sanity check. These are the parts I ordered, let me know if i missed anything

12 x Rod Bolts - BMW-11247589671
Oil pan Bolt Set - CRP-HWK0003
3 x King Rod Bearings (ship in pairs) - KEB-CR222SV
Oil pan Gasket - BMW-11137600482
Pick up tube gasket - BMW-11417527092
Redline Assembly Lube
Tow Hook - BMW-72157070643
MMR Performance Baffle - MMR20-0501
5w30 Synthenic Oil

Green plastigauge to check clearances...

I saw in another thread someone ordering oil pump bolts, not sure why?

In terms of torque for the rod bolts, as im using OEM it would be 20Nm, 70 degrees, and then 70 degrees again

While i have this apart ill also update the engine mounts and get a Hard Race sway bar

Get the oil pump bolt kit, it comes with the windage tray bolts

https://www.fcpeuro.com/products/bmw...SABEgKX3PD_BwE

Everything else looks good, maybe end links for the sway bar.
With the king bearings clearance you may do 5w40 because the little more clearance

[Tobz_au]

Yep ill be swapping to 5W40, got confused as I am doing an oil change this weekend and just ordered new oil! :P

That explains the oil pump bolt kit... ill just order it locally, its not too exxy